Erect herbs, branching; stems terete, sparsely pilose or glabrous, to 1 m tall. Leaves sessile, sparingly pilose, lower and basal ones obovate-spatulate, 8-14 cm long, apex obtuse, margins crenate or entire, upper leaves much smaller, linear to linear-lanceolate, acute, entire. Heads usually oblong, ca. 1.4 cm long, solitary or in clusters of 2-5 arranged spicately on elongated inflorescence branches. Involucre 8-12 mm long, bracts green, lanceolate, aristate-acuminate, outer bracts smaller, ca. 1/2 as long as inner. Corolla white, ca. 7 mm long. Receptacles minute. Achenes brown, oblong, 1-1.2 cm long, 5-6 mm wide, strongly 10-ribbed, hirsute. Pappus bristles 10, 4 rigid, unequal, 4 straight and 2 longer and curved. Chromosome number, 2n = 22 (Peng & Hsu, 1978).

NANTOU: Hoshe, Peng 6566. CHIAYI: Fanlu, Yen 2069. KAOHSIUNG: Liukuei, Peng 11210, Shanping, Peng 11247. PINGTUNG: Nanjenshan, Liu 80.

South America, introduced and naturalized in Asia. Taiwan, at low elevations in open fields in the south.